Home / 258,783.96-387,945.08-100,975.70

Finding the Fourth Proportional to 258,783.96, 387,945.08 and 100,975.70

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Solution

The fourth proportional to 258,783.96, 387,945.08 and 100,975.70 is: 151,373.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,783.96 : 387,945.08 = 100,975.70 : x
  2. Step 2: Convert to fraction form
    258,783.96/387,945.08 = 100,975.70/x
  3. Step 3: Cross multiply
    258,783.96x = 387,945.08 × 100,975.70
  4. Step 4: Simplify right side
    258,783.96x = 39,173,026,014.56
  5. Step 5: Solve for x
    x = 39,173,026,014.56/258,783.96
  6. Step 6: Final answer
    x = 151,373.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.